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https://www.readbyqxmd.com/read/29149743/multigenerational-effects-of-salinity-in-six-clonal-lineages-of-daphnia-longispina
#1
C Venâncio, R Ribeiro, A M V M Soares, I Lopes
Sea level rise, as a consequence of climate changes, is already causing seawater intrusion in some freshwater coastal ecosystems worldwide. The increase in salinity at these freshwater coastal ecosystems may occur gradually (through groundwater) or abruptly (through extreme weather events). Moreover, many of them are also being altered and threatened by anthropogenic activities. Accordingly, the present study aimed at assessing the multigenerational lethal and sublethal effects caused by increased salinity in six clonal lineages of the freshwater cladoceran Daphnia longispina differing in their sensitivity to lethal levels of copper...
November 14, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/29149676/high-salt-diet-decreases-reproductive-performance-in-rams-and-down-regulates-gene-expression-of-some-components-of-the-renin-angiotensin-system-in-the-testis
#2
Yi Fang, Rongzhen Zhong, Xuezhao Sun, Daowei Zhou
Although salt-tolerant plants can be used to combat dryland salinity, these plants contain high concentrations of salt (NaCl), which may have deleterious effects if fed to livestock. Twenty-four Merino rams (9 mo of age) with similar body weight were equally allocated to two groups and fed a normal- or high-salt diet (0.5 and 12% NaCl, respectively) for 3 mo. Rams fed the high-salt diet had lower live weight gains, higher water intake, smaller testes (466 ± 48.4 vs 604 ± 51.1 g) and reductions (P <0...
November 10, 2017: Theriogenology
https://www.readbyqxmd.com/read/29149055/exploration-for-the-salinity-tolerance-related-genes-from-xero-halophyte-atriplex-canescens-exploiting-yeast-functional-screening-system
#3
Gang Yu, Jingtao Li, Xinhua Sun, Yanzhi Liu, Xueliang Wang, Hao Zhang, Hongyu Pan
Plant productivity is limited by salinity stress, both in natural and agricultural systems. Identification of salt stress-related genes from halophyte can provide insights into mechanisms of salt stress tolerance in plants. Atriplex canescens is a xero-halophyte that exhibits optimum growth in the presence of 400 mM NaCl. A cDNA library derived from highly salt-treated A. canescens plants was constructed based on a yeast expression system. A total of 53 transgenic yeast clones expressing enhanced salt tolerance were selected from 10⁵ transformants...
November 17, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29148143/leaf-cell-membrane-stability-based-mechanisms-of-zinc-nutrient-in-mitigation-of-salinity-stress-in-rice
#4
Abdullah Tufail, Hong Li, Asif Naeem, Tingxian Li
Excess salts affect about 955 million ha of total arable lands worldwide and 49% of agricultural lands are Zn deficient. Soil salinity and zinc deficiency can intensify plant abiotic stress. The mechanisms by which Zn nutrients can mitigate salinity effects on plant functions are not well understood. We conducted an experiment to determine the zinc and salinity effects on rice plant retention of Zn, macronutrient potassium (K) and salt ion Na, chlorophyll formation, leaf cell membrane stability and grain yield, and to examine the mechanisms of zinc nutrition in mitigating salinity stress on plant physiological and nutritional aspects...
November 16, 2017: Plant Biology
https://www.readbyqxmd.com/read/29146257/klebsiella-sp-confers-enhanced-tolerance-to-salinity-and-plant-growth-promotion-in-oat-seedlings-avena-sativa
#5
Swapnil Sapre, Iti Gontia-Mishra, Sharad Tiwari
Plant growth and yield is adversely affected by soil salinity. Salt tolerant plant growth-promoting rhizobacteria (PGPR) strain IG 3 was isolated from rhizosphere of wheat plants. The isolate IG 3 was able to grow in presence of NaCl ranging from 0 to 20% in Luria Bertani medium. The present study was planned to evaluate the role of inoculation of PGPR strain IG 3 and its efficacy in augmenting salt tolerance in oat (Avena sativa) under NaCl stress (100mM). The physiological parameter such as shoot length, root length, shoot dry weight, root dry weight and relative water content (RWC) were remarkably higher in IG 3 inoculated plants in comparison to un-inoculated plants under NaCl stress...
January 2018: Microbiological Research
https://www.readbyqxmd.com/read/29146249/composition-of-lactic-acid-bacteria-during-spontaneous-curly-kale-brassica-oleracea-var-sabellica-fermentation
#6
Magdalena Michalak, Klaudia Gustaw, Adam Waśko, Magdalena Polak-Berecka
The present work is the first report on spontaneous fermentation of curly kale and characteristics of autochthonous lactic acid bacteria (LAB). Our results indicate that curly kale fermentation is the new possibility of the technological use of this vegetable. Bacteria representing ten different species were isolated from three phases of curly kale fermentation and identified by MALDI-TOF mass spectrometry and 16S rRNA gene sequencing. Among them, four species were identified as Lactobacillus spp. (Lb. plantarum 332, Lb...
January 2018: Microbiological Research
https://www.readbyqxmd.com/read/29145809/genome-wide-characterization-and-expression-profiling-of-pdi-family-gene-reveals-function-as-abiotic-and-biotic-stress-tolerance-in-chinese-cabbage-brassica-rapa-ssp-pekinensis
#7
Md Abdul Kayum, Jong-In Park, Ujjal Kumar Nath, Gopal Saha, Manosh Kumar Biswas, Hoy-Taek Kim, Ill-Sup Nou
BACKGROUND: Protein disulfide isomerase (PDI) and PDI-like proteins contain thioredoxin domains that catalyze protein disulfide bond, inhibit aggregation of misfolded proteins, and function in isomerization during protein folding in endoplasmic reticulum and responses during abiotic stresses.Chinese cabbage is widely recognized as an economically important, nutritious vegetable, but its yield is severely hampered by various biotic and abiotic stresses. Because of, it is prime need to identify those genes whose are responsible for biotic and abiotic stress tolerance...
November 16, 2017: BMC Genomics
https://www.readbyqxmd.com/read/29145593/root-respiratory-burst-oxidase-homologue-dependent-h2o2-production-confers-salt-tolerance-on-a-grafted-cucumber-by-controlling-na-exclusion-and-stomatal-closure
#8
Mengliang Niu, Yuan Huang, Shitao Sun, Jingyu Sun, Haishun Cao, Sergey Shabala, Zhilong Bie
Plant salt tolerance can be improved by grafting onto salt-tolerant rootstocks. However, the underlying signaling mechanisms behind this phenomenon remain largely unknown. To address this issue, we used a range of physiological and molecular techniques to study responses of self-grafted and pumpkin-grafted cucumber plants exposed to 75 mM NaCl stress. Pumpkin grafting significantly increased the salt tolerance of cucumber plants, as revealed by higher plant dry weight, chlorophyll content and photochemical efficiency (Fv/Fm), and lower leaf Na+ content...
November 14, 2017: Journal of Experimental Botany
https://www.readbyqxmd.com/read/29142238/mapping-qtls-conferring-salt-tolerance-and-micronutrient-concentrations-at-seedling-stagein-wheat
#9
Babar Hussain, Stuart James Lucas, Levent Ozturk, Hikmet Budak
Soil salinization and degradation is one of the consequences of climate change. Identification of major salt tolerance genes and marker assisted selection (MAS) can accelerate wheat breeding for this trait. We genotyped 154 wheat F2 lines derived from a cross between salt tolerant and susceptible cultivars using the Axiom Wheat Breeder's Genotyping Array. A high-density linkage map of 988 single nucleotide polymorphisms (SNPs) was constructed and utilized for quantitative trait loci (QTL) mapping for salt tolerance traits and mineral concentrations under salinity...
November 15, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29142163/strain-improvement-studies-on-microbacterium-foliorum-ga2-for-production-of-%C3%AE-amylase-in-solid-state-fermentation-biochemical-characteristics-and-wash-performance-analysis-at-low-temperatures
#10
Roohi, Mohammed Kuddus
Microbacterium foliorum GA2, an alkali-tolerant bacterium, was randomly mutated using UV radiation and sodium azide to obtain a mutant with a higher cold-active extracellular amylolytic activity. A mutant, designated as MFSD20, was selected owing to its higher amylase activity at 20°C. Under optimized conditions, amylase production was achieved best with raw banana peels (5000 units) in solid-state fermentation (SSF). The enzyme was purified by salt precipitation and chromatographic methods and afterwards characterized biochemically...
November 15, 2017: Journal of General and Applied Microbiology
https://www.readbyqxmd.com/read/29140437/metabolite-profiling-at-the-cellular-and-subcellular-level-reveals-metabolites-associated-with-salinity-tolerance-in-sugar-beet
#11
M Sazzad Hossain, Marcus Persicke, Abdelaleim Ismail ElSayed, Jörn Kalinowski, Karl-Josef Dietz
Sugar beet is among the most salt-tolerant crops. This study aimed to investigate the metabolic adaptation of sugar beet to salt stress at the cellular and subcellular levels. Seedlings were grown hydroponically and subjected to stepwise increases in salt stress up to 300 mM NaCl. Highly enriched fractions of chloroplasts were obtained by non-aqueous fractionation using organic solvents. Total leaf metabolites and metabolites in chloroplasts were profiled at 3 h and 14 d after reaching the maximum salinity stress of 300 mM NaCl...
November 11, 2017: Journal of Experimental Botany
https://www.readbyqxmd.com/read/29140136/salt-glycerol-induced-hyperhydration-enhances-fluid-retention-more-than-salt-or-glycerol-induced-hyperhydration
#12
Eric D B Goulet, Adrien De La Flore, Félix A Savoie, Jonathan Gosselin
Hyperhydration has been demonstrated to improve work capacity and cardiovascular and thermoregulatory functions, enhance orthostatic tolerance, slow or neutralize bone demineralization and decrease post-dive bubble formation. Adding sodium or glycerol to a hyperhydration solution optimizes fluid retention. Sodium and glycerol produce their effect through different physiological mechanisms. If combined into a hyperhydration solution their impact on fluid retention could potentially be greater than their singular effect...
November 15, 2017: International Journal of Sport Nutrition and Exercise Metabolism
https://www.readbyqxmd.com/read/29139111/a-retrotransposon-in-an-hkt1-family-sodium-transporter-causes-variation-of-leaf-na-exclusion-and-salt-tolerance-in-maize
#13
Ming Zhang, Yibo Cao, Zhiping Wang, Zhi-Qiang Wang, Junpeng Shi, Xiaoyan Liang, Weibin Song, Qijun Chen, Jinsheng Lai, Caifu Jiang
Soil salinity is one of several major abiotic stresses that constrain maize productivity worldwide. An improved understanding of salt-tolerance mechanisms will thus enhance the breeding of salt-tolerant maize and boost productivity. Previous studies have indicated that the maintenance of leaf Na(+) concentration is essential for maize salt tolerance, and the difference in leaf Na(+) exclusion has previously been associated with variation in salt tolerance between maize varieties. Here, we report the identification and functional characterization of a maize salt-tolerance quantitative trait locus (QTL), Zea mays Na(+) Content1 (ZmNC1), which encodes an HKT-type transporter (designated as ZmHKT1)...
November 15, 2017: New Phytologist
https://www.readbyqxmd.com/read/29138619/distribution-characterization-and-diversity-of-the-endophytic-fungal-communities-on-korean-seacoasts-showing-contrasting-geographic-conditions
#14
Young-Hyun You, Jong Myong Park, Yeong Gyo Seo, Woong Lee, Myung-Suk Kang, Jong-Guk Kim
This study analyzed the distribution of endophytic fungi in 3 coastal environments with different climatic, geographical, and geological characteristics: the volcanic islands of Dokdo, the East Sea, and the West Sea of Korea. The isolated fungal endophytes were characterized and analyzed with respect to the characteristics of their host environments. For this purpose, we selected common native coastal halophyte communities from three regions. Molecular identification of the fungal endophytes showed clear differences among the sampling sites and halophyte host species...
September 2017: Mycobiology
https://www.readbyqxmd.com/read/29138306/key-metabolites-and-mechanistic-changes-for-salt-tolerance-in-an-experimentally-evolved-sulfate-reducing-bacterium-desulfovibrio-vulgaris
#15
Aifen Zhou, Rebecca Lau, Richard Baran, Jincai Ma, Frederick von Netzer, Weiling Shi, Drew Gorman-Lewis, Megan L Kempher, Zhili He, Yujia Qin, Zhou Shi, Grant M Zane, Liyou Wu, Benjamin P Bowen, Trent R Northen, Kristina L Hillesland, David A Stahl, Judy D Wall, Adam P Arkin, Jizhong Zhou
Rapid genetic and phenotypic adaptation of the sulfate-reducing bacterium Desulfovibrio vulgaris Hildenborough to salt stress was observed during experimental evolution. In order to identify key metabolites important for salt tolerance, a clone, ES10-5, which was isolated from population ES10 and allowed to experimentally evolve under salt stress for 5,000 generations, was analyzed and compared to clone ES9-11, which was isolated from population ES9 and had evolved under the same conditions for 1,200 generations...
November 14, 2017: MBio
https://www.readbyqxmd.com/read/29131853/transcriptome-analysis-of-crossostephium-chinensis-provides-insight-into-the-molecular-basis-of-salinity-stress-responses
#16
Haiyan Yang, Ming Sun, Shuangji Lin, Yanhong Guo, Yongjuan Yang, Tengxun Zhang, Jingxing Zhang
Soil salinization is becoming a limitation to the utilization of ornamental plants worldwide. Crossostephium chinensis (Linnaeus) Makino is often cultivated along the southeast coast of China for its desirable ornamental qualities and high salt tolerance. However, little is known about the genomic background of the salt tolerance mechanism in C. chinensis. In the present study, we used Illumina paired-end sequencing to systematically investigate leaf transcriptomes derived from C. chinensis seedlings grown under normal conditions and under salt stress...
2017: PloS One
https://www.readbyqxmd.com/read/29128358/plant-salt-tolerance-mechanism-a-review
#17
Wenji Liang, Xiaoli Ma, Peng Wan, Lianyin Liu
Almost all crops that are important to humans are sensitive to high salt concentration in the soil. The presence of salt in soil is one of the most significant abiotic stresses in farming. Therefore, improving plant salt tolerance and increasing the yield and quality of crops in salty land is vital. Transgenic technology is a fast and effective method to obtain salt-tolerant varieties. At present, many scholars have studied salt damage to plant and plant salt-tolerance mechanism. These scholars have cloned a number of salt-related genes and achieved high salt tolerance for transgenic plants, thereby showing attractive prospects...
November 8, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29125673/overexpression-of-sdh-confers-tolerance-to-salt-and-osmotic-stress-but-decreases-aba-sensitivity-in-arabidopsis
#18
Xiao-Pu Shi, Jing-Jing Ren, Qin Yu, Shu-Mei Zhou, Qiu-Ping Ren, Lan-Jing Kong, Xiu-Ling Wang
Sorbitol dehydrogenase (SDH) catalyzes the reversible oxidation of sorbitol, xylitol and ribitol to their corresponding ketoses. In this study, we investigated the expression and role of Arabidopsis SDH in salt and osmotic stress tolerance, and abscisic acid (ABA) response. The expression patterns of SDH were investigated using transgenic Arabidopsis plants expressing beta-glucuronidase (GUS) under the control of promoter with the first intron of SDH. qRT-PCR and histochemical assay of GUS activity were used to study SDH expression regulation by ABA, salt and osmotic stress...
November 10, 2017: Plant Biology
https://www.readbyqxmd.com/read/29124653/salt-stress-effects-on-the-photosynthetic-electron-transport-chain-in-two-chickpea-lines-differing-in-their-salt-stress-tolerance
#19
Nuran Çiçek, Abdallah Oukarroum, Reto J Strasser, Gert Schansker
The main objective of this study was to evaluate the effects of salt stress on the photosynthetic electron transport chain using two chickpea lines (Cicer arietinum L.) differing in their salt stress tolerance at the germination stage (AKN 87 and AKN 290). Two weeks after sowing, seedlings were exposed to salt stress for 2 weeks and irrigated with 200 ml of 200 mM NaCl every 2 days. The polyphasic OJIP fluorescence transient and the 820-nm transmission kinetics (photosystem I) were used to evaluate the effects of salt stress on the functionality of the photosynthetic electron transport chain...
November 9, 2017: Photosynthesis Research
https://www.readbyqxmd.com/read/29124326/impact-of-two-arbuscular-mycorrhizal-fungi-on-arundo-donax-l-response-to-salt-stress
#20
Susanna Pollastri, Andreas Savvides, Massimo Pesando, Erica Lumini, Maria Grazia Volpe, Elif Aylin Ozudogru, Antonella Faccio, Fausta De Cunzo, Marco Michelozzi, Maurizio Lambardi, Vasileios Fotopoulos, Francesco Loreto, Mauro Centritto, Raffaella Balestrini
AM symbiosis did not strongly affect Arundo donax performances under salt stress, although differences in the plants inoculated with two different fungi were recorded. The mechanisms at the basis of the improved tolerance to abiotic stresses by arbuscular mycorrhizal (AM) fungi have been investigated mainly focusing on food crops. In this work, the potential impact of AM symbiosis on the performance of a bioenergy crop, Arundo donax, under saline conditions was considered. Specifically, we tried to understand whether AM symbiosis helps this fast-growing plant, often widespread in marginal soils, withstand salt...
November 9, 2017: Planta
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